function Layer_HideOrShow(cur_div,next_div) {
	var current = document.getElementById(cur_div);
	var next = document.getElementById(next_div);
	current.style.visibility = "visible";
	current.style.display = "inline";
	next.style.visibility = "hidden";
	next.style.display = "none";
}
function ShowHello(div1,div2){
	var current = document.getElementById(div1);
	var next = document.getElementById(div2);
	current.style.visibility = "hidden";
	next.style.visibility = "hidden";
	current.style.display = "none";
	next.style.display = "inline";
}